How would you answer this and what's the formula?

Arandom sample of 150 high school students were asked whether they have a job. the results are shown in the table. have a job do not have a job male 48 35 female 41 26 select a ord or phrase from the drop-down menus to correctly complete the statements describing the association.

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Can you divide 25 into 4 equal groups? explain why or why not.